\section{pcre}
\label{sec:pcre}
\input{./library/pcre.tex}

pcre is more flexible and dynamic compared with using mikmatch, but
more verbose however.
\begin{enumerate}
\item Backreferences

  \begin{ocamlcode}
 Pcre.(pmatch ~flags: [] ~pat:"('\\w)(\\s*)->(\\s*)\\1" " 'a -> 'a");;    
\end{ocamlcode}
\begin{ocamlcode}
bool = true  
\end{ocamlcode}

\end{enumerate}
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